I was working for a sales company and was manning the phones. I rang one man who only sounded to be in his twenties and he said after my sales pitch ' I want to make clear to you...' and I interrupted him with my flirty voice and said 'oh so you wanna make love to me do ya?' then he stammered and went no I said clear! And hung up the phone. My colleague friend heard everything and soon everyone at work knew about my embarrassing mistake!